问题

________ it comes to the increasing use ofmotor vehicles in the cities，some people think it should be limited．

A:Because
B:Once
C:When
D:While

正确答案是：

同类题型

That is _______ he likes the place so much.

Maybe there are some things among the girl’s papers, like her school reports, old photos and so on. Can you ______ them and give me whatever you find?

She would rather _____ more money on books _____ on clothes.

I would rather _____ at home than______.

I’m making progress this term, so I am very proud ________ myself.